hard · flats · 2 storeys
B0030: a adu pair on a 12.9 × 18 m lot
2 dwellings, 11 rooms. The pooled front across all methods holds 582 nondominated designs.
Requirements
- Lot
- 12.9 × 18 m (232 m²)
- Street side faces
- 75° (0 = north)
- Setbacks front / rear / left / right
- 3.6 / 5.8 / 2 / 1.5 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 38% of the lot
- Parking spaces
- 1
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.731
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 2BR | 0 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
| U1 | 1BR | 1 | 46 | entry, living, kitchen, bathroom, bedroom primary |
Required contacts: entry–living, kitchen–living. Doors forbidden between: entry–bedroom_primary, entry–bedroom_secondary, kitchen–bathroom.
Results by method
| Method | Solved | HV | Evals | s | Notes |
|---|---|---|---|---|---|
| Heuristic | 0% | 0.000 | 280 | 0.6 | |
| Random search | 0% | 0.000 | 1500 | 3.2 | |
| Simulated annealing | 100% | 0.069 | 1500 | 3.6 | |
| NSGA-II | 100% | 0.090 | 1500 | 4.5 | |
| CP-SAT | 100% | 0.078 | 46 | 6.8 | |
| Random sketch + repair | 100% | 0.075 | 1500 | 4.1 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.100 | 1500 | 4.3 | repair collapse |
Mean over 1 seeds (the heuristic is deterministic: one run).
Representative designs from the pooled front
Each is best on one objective, or the knee: the most balanced trade-off. None is best overall.
Closest attempts that failed
For methods that found nothing feasible: their least-infeasible design, with its violations marked on its page.
Pareto explorer
Loading designs…
Convergence on this brief
Archive hypervolume against evaluations, mean over seeds.
What stopped designs here
| method | C04 | C05 | C06 | C07 | C08 | C09 | C10 | C11 |
|---|---|---|---|---|---|---|---|---|
| Heuristic | 24% | 68% | 91% | 24% | – | – | 1% | – |
| Random search | 89% | 99% | 66% | 99% | 23% | 76% | 37% | 86% |
| Simulated annealing | 38% | 71% | 37% | 61% | 9% | 33% | 19% | 43% |
| NSGA-II | 32% | 71% | 32% | 49% | 9% | 31% | 19% | 32% |
| Random sketch + repair | 50% | 75% | 51% | 37% | 18% | 28% | 22% | 60% |
| Heuristic-seeded NSGA-II | 32% | 80% | 51% | 35% | 7% | 33% | 12% | 23% |